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Specific activity of uranium and thorium in marketable rock phosphate as a function of particle size

Journal Article:

Abstract

Marketable rock phosphate fertilizer from Florida was classified into seven particle size fractions ranging from 149 ..mu..m to less than 0.5 ..mu..m using a Bahco Microparticle Classifier and air elutriation. The resulting size fractions were assayed for U and /sup 230/Th by solvent extraction and liquid scintillation ..cap alpha..-spectroscopy. Results indicated that the specific activity of U and /sup 230/Th increased with decreasing particle size. Maximum activities of 110 pCi/g U and 50 pCi/g /sup 230/Th were found in particles less than 1.0 ..mu..m in aerodynamic diameter. Qualitative emission spectrographic analysis of the fractions revealed that the concentrations of Al, Cu, Mg, Na, Ti and Zn also increased with decreasing particle size.
Authors:
Metzger, R; McKlveen, J W; [1]  Jenkins, R; [2]  McDowell, W J [3] 
  1. Arizona State Univ., Tempe (USA)
  2. Phillip Morris Research Center, Richmond, VA (USA)
  3. Oak Ridge National Lab., TN (USA)
Publication Date:
Jul 01, 1980
Product Type:
Journal Article
Reference Number:
AIX-12-581622; EDB-81-049891
Resource Relation:
Journal Name: Health Phys.; (United Kingdom); Journal Volume: 39:1
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; PHOSPHATE ROCKS; RADIOACTIVITY; THORIUM 230; URANIUM; ALPHA SPECTROSCOPY; ALUMINIUM; COPPER; ELUTRIATION; EMISSION SPECTROSCOPY; FERTILIZERS; FLORIDA; MAGNESIUM; PARTICLE SIZE; PHOSPHATES; SODIUM; SOLVENT EXTRACTION; TITANIUM; ZINC; ACTINIDE ISOTOPES; ACTINIDE NUCLEI; ACTINIDES; ALKALI METALS; ALKALINE EARTH METALS; ALPHA DECAY RADIOISOTOPES; ELEMENTS; EVEN-EVEN NUCLEI; EXTRACTION; HEAVY NUCLEI; ISOTOPES; METALS; NORTH AMERICA; NUCLEI; OXYGEN COMPOUNDS; PHOSPHORUS COMPOUNDS; RADIOISOTOPES; ROCKS; SEDIMENTARY ROCKS; SEPARATION PROCESSES; SIZE; SOUTHEAST REGION; SPECTROSCOPY; THORIUM ISOTOPES; TRANSITION ELEMENTS; USA; YEARS LIVING RADIOISOTOPES; 050000* - Nuclear Fuels
OSTI ID:
6567066
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: HLTPA
Submitting Site:
INIS
Size:
Pages: 69-75
Announcement Date:

Journal Article:

Citation Formats

Metzger, R, McKlveen, J W, Jenkins, R, and McDowell, W J. Specific activity of uranium and thorium in marketable rock phosphate as a function of particle size. United Kingdom: N. p., 1980. Web.
Metzger, R, McKlveen, J W, Jenkins, R, & McDowell, W J. Specific activity of uranium and thorium in marketable rock phosphate as a function of particle size. United Kingdom.
Metzger, R, McKlveen, J W, Jenkins, R, and McDowell, W J. 1980. "Specific activity of uranium and thorium in marketable rock phosphate as a function of particle size." United Kingdom.
@misc{etde_6567066,
title = {Specific activity of uranium and thorium in marketable rock phosphate as a function of particle size}
author = {Metzger, R, McKlveen, J W, Jenkins, R, and McDowell, W J}
abstractNote = {Marketable rock phosphate fertilizer from Florida was classified into seven particle size fractions ranging from 149 ..mu..m to less than 0.5 ..mu..m using a Bahco Microparticle Classifier and air elutriation. The resulting size fractions were assayed for U and /sup 230/Th by solvent extraction and liquid scintillation ..cap alpha..-spectroscopy. Results indicated that the specific activity of U and /sup 230/Th increased with decreasing particle size. Maximum activities of 110 pCi/g U and 50 pCi/g /sup 230/Th were found in particles less than 1.0 ..mu..m in aerodynamic diameter. Qualitative emission spectrographic analysis of the fractions revealed that the concentrations of Al, Cu, Mg, Na, Ti and Zn also increased with decreasing particle size.}
journal = {Health Phys.; (United Kingdom)}
volume = {39:1}
journal type = {AC}
place = {United Kingdom}
year = {1980}
month = {Jul}
}